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<html lang="en">
<head>
  <meta charset="UTF-8">
    <title>hello</title>
      <link rel="stylesheet" href="layout.css">
        <link rel="icon" href="https://i.wangding.in/favicon.ico" sizes="48x48" type="image/png">
        </head>
        <body>
        年龄：<input type="range" value='0'><br>
        你的年龄是：<span>0</span>&nbsp;岁
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        </body>
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